To access a shared folder that isn't one of the folders listed on the File | Open | Other User's Folder dialog, the mailbox owner needs to grant "folder visible" permission to the root of the mailbox and any other parent folders of the shared folder, as well as appropriate permission -- at least Reviewer -- on the shared folder itself.
The user who needs access then goes into Tools | E-mail Accounts or Tools | Services (depending on the Outlook version), brings up the properties for the Exchange Server service, and on the Advanced tab, adds the mailbox.
For more information on folder permissions, with how-to screen shots, see http://www.howto-outlook.com/howto/permissions.htm and http://office.microsoft.com/assistance/preview.aspx?AssetID=HA011134811033

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Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
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> We are using Exchange 2003 with Outlook 2003, I have a lot of contacts and
> have sub folders under my normal contacts, I want others to be able to view
[quoted text clipped - 3 lines]
> sub folders of contacts I cant see them, does anyone know how I can share
> these sub folders (contacts) with others??
The Master - 26 Sep 2006 22:22 GMT
Many thanks
> To access a shared folder that isn't one of the folders listed on the File | Open | Other User's Folder dialog, the mailbox owner needs to grant "folder visible" permission to the root of the mailbox and any other parent folders of the shared folder, as well as appropriate permission -- at least Reviewer -- on the shared folder itself.
>
[quoted text clipped - 9 lines]
> > sub folders of contacts I cant see them, does anyone know how I can share
> > these sub folders (contacts) with others??